Operating means for a crank press



April 25, 1933. c, H, LAsKER OPERATING MEANS FOR A CRANK PRESS Filed May 5. 1932 @wal-wm S. W

e? #rfa/Man Patented Apr. 25, 1933 Appucafibn mea Maya The subject of my invention is anioperating meansfor a crank presssuchas a` brick Press! -J' It isthe object of my invention yto'- provide means wherebyla press of the crank or rotary type,V which has reciprocating' parts driven by a rotating engine7 is enabled to move at slowl speed during the working cycle and at high speed during the opening and closing cycle when the press is not working. By this means the press may be run at slow speeds when working and thus give a pressure comparable to that of an hydraulic press and yet move with such speed during the non-working cycle as to give the high production required ot' modern machinery.

An embodimentof my invention consists in a crank press, a motor `for said press, means for driving saidpress `from said motor at `high speed, means for driving said press from said motor at slow speed, and means for selecting oneor other lof Asaid previously mentioned means in accordance with the position of the press.

For a vfurther exposition of my invention reference may be had toV the annexed drawing and specification at the end whereof my invention will be speciically pointed out and claimed. n y

Figure 1 represents an elevation of my device with parts in cross section and in diagram.

Figure 2 is a diagrammatic view of a portion of my device. v

Figure 3 is a diagram disclosing the mode of operation of my device.

In that embodiment of my invention chosen 4for illustration in the drawing my device is shown as consisting of a motor of any convenient type, such as an electric motor. Motor 1 has shaft 2 connected thereto which carries V{1y-wheel 3 and gear 4. Gear 4 meshes with gear 5 on a lay-shaft or counter-shaft 6 which also carries a gear 7 thereon. Gear 7 meshes with gearrS which is mounted for rotation on the sleeve of the,

driving member` 10 of the clutch generally `indicated at L. Clutch L also` includes a driven member 11. Mounted on shaft 2 is Y 1932. serial 110.1609365. i y driving. member' i also includes driven member 111 fast on stub shaft 12 which also carries driven member 11. Shaft 12 carries gearlB which-mesheswith a train Aof gears to `drivecranlr shaft 140i 5g thev press generally indicated'at 15. Crank shaft `14 carries atone end 'a gear 16, which has a pin 17 4mounted thereon. Gear 516 meshes with another gear 18 whichv carries apin '19 thereon. Switch 20 is pivotally 69 mounted-at :2 1'adja`centgears .16 andY18. so

that thearms 22 and 23v cooperate with the pms 17 and 19 respectively to move switch 201so that.thecontaetsfindicated at24and` 25 'ri are respectively operated. Wires 26 and27 6** connectcontacts 24 and 25 with clutches H `.andiL,respectively solthat: as switch -20 is moved-fromfone position vto the other either [clutch Hor clutch Lis actuatedto 'connect or to .disengage its driving Y and driven Vinem- Q bers, Wires 28 are; a source of.- current `for switchf'20 andfor clutches Hand L. ff'

shown,inFigurefBfit islthe purpose sofmy. invention tofmove theip'fr'ess l5 at low Vspeedfrom the `pointzALto the point -Bon '75 the diagram in Figure 3, this n being thel press. Y

2 v In-'Ylthe operation of device motor1 is I startedvilandj drivespress 15 either at'high orflow speed-depending upon whether clutch 'H yor -clutchL is in, engagement. DuringA v85` the pressing cycle the driving is from motor 1,',shaft 2,"ge`ars 4 and 5,7lay shaft 6,fgears 7 and 8,"clutch L,stubjshaft 12,\ge`ar lto crank .shaftf 141. Whenf the L pressing cycle of thelpress is` complete switch 20 is shifted by means'offpin 17 so that 'clutch-L isdisengaged and clutchlHis engaged. Motor 1V then drives press 15 through the following connections, shaftr 2,1 clutch H, stub `gear. lfandcrankshaft 14C.` i i I, do not intend tobe limited inthe pracj tice of my invention save as the -scope'of the prior` lart and .of .the attached claims Vvmayv requires;` r

I' claim.;

-shaft1:12, 95

ico i 1.y Operating means for a power press in- Y cluding in combination a motor, a power press driven by said motor, means for driving-said pressfrom said motor athigh speed; means forldrlvlng said press from said motor at slow speed7 and means for selectingy 'one or otherfofgsaidI-last mentioned means aocording to' the'positi'on of-said press. v x

f 2; Operating means "for a crankpre'ss. 111-. .,L

cluding in combination ai motor,V a ucrank press adapted tobe driven'bysaid' motor,

' train of gearing: for'driv-ingsaid press from lsaidvmotor at high spedfzf second'trai'nf'of gearing forl driving saidjpress from said; motor at slow speed, and means dependent o "upon .the position fof 'said press for-f: selecting 'first orY said second-trainfof gearing.: l'

i Y*33 Operating {means forV a crank` press in-l ;cludingin combination` a motor, laV crankl press adaptedrtolbe driven by said` motor, a train of gearingfor driving saidjpress from stub shaft, a clutch driven member coo'per- *d i lating with said clutchv driving member` mounted on said Astub shaft7 a second'clutch ldriven member mountedon said stub shaft,

a second clutch drivingV lmember/loosely mounted on said stub shaft, a'gear 4for drivmeshing withr` said se'condfgear 'on saidlayshaft', a crank shaftrfor said press, a train Y of gearing vC,01111ecting[said crank shaft tov said stub'sh'aft;rv adimit switch, means forr Y Y actuatingsaid limitswitch' from said crank shaft depending'ip'on the position of -said j =press,.eleotri calconnections between saidn s clutch members and said limit switch where'` Y by in either position' of, said limit switch 'one 'ofi said clutches KJis. engaged and 4the other is disengaged, and a SOUICG of' electricitygfo'r Sad'lmlt Switch and OI iSaid clutch;

Y saidmotor at high speed,l 1a l'second trainkof [gearing for `drivingsaid press from said A rmotor at low speed, Ea plurality.- of4 clutches controllingisaid train of gearing; and means for i connecting tone 'and disengaging the press adaptedy to be dri-ven by said motorfa ing` said second clutch'driving member and other ofr'said clutches-pdependingvuponwthe. L

' v train-of :gearing for driving saidpress lfrom gearing for 'driving lsaid "pressi fromfsaid motorat' low speed,- a second clutch control: i ling said second train 1of gearing, and-means includingfan electric switch lfor connecting i 'one and-disengagingxthe v@they Ofesaid clutches* depending upon the posit-n .Of- `saidlpress. Y Y elle n 5. Operating means for a crank press iny A cluding in l'combination a motorfafcrank i* pressrx adapted.Fito4 be driven K'bysaid motor,'

aftrainof gea-ringv for driving saidf press from said motor at'high speed, an electromagnetic i clutch controlling saidv 'train`l vof i i gearing,fa second train of gearing fordr'iving said press lfrom l said 'motor atl slow f speed,vv a second electromagnetic 'clutch-'con-4 'Y trolling said second train, of gearing, 1 an Y electric switch actuated by said pressfor connecting one and disengaging theother I of said clutches. depending upon'the f posi- 6p-Operating means for acranki press! for Y shaft, a:.s'econd 'gear on said` layshaft, Va 

